AUCTeX is an extensible package for writing and formatting TeX files in GNU Emacs and XEmacs.

Here are some key features of "AUCTeX":

Editing:

· Insert macros, environments and headings with a simple key stroke or via a menu entry. AUCTeX will help you by prompting for parameters in case of known macros and environments. There is a completion mechanism for partially written macros available as well.· Use keyboard shortcuts for inserting math.· Sophisticated fontification and indentation of TeX/LaTeX macros and environments.· Fold macros and environments and show their contents or a pre-defined string instead. You can temporarily show the folded content again for editing.

Compiling:

· Run various TeX/LaTeX interpreters and related programs like BibTeX or makeindex from within Emacs.· View errors of the compiler run and jump to the respective place in the TeX/LaTeX source code.

Viewing:

· Start viewers for DVI, PostScript and PDF output from within Emacs.· Use forward and inverse search with DVI viewers.

Extensibility and customizability:

· Support for macros and environments of many TeX/LaTeX packages with the use of style files.· Easily extensible by writing your own style files.· Many aspects of AUCTeX can be adapted to fit your personal working style via the customize mechanism provided by Emacs.

What's New in This Release:

· A new function TeX-doc for accessing docs on C-c ?.· New "Clean" and "Clean All" commands for intermediate and output files. pdfsync support (forward search in PDF files).· LaTeX comes with its own toolbar enabled by default.· Some bugs have been fixed.